[FIX] web: faster asset search

Help postgres planner avoiding a scan over the entire table.

On a database with 5.5M ir_attachment but only a few url:
before: https://explain.dalibo.com/plan/g45f7492a78d6e19#raw
after: https://explain.dalibo.com/plan/1f5868ba6909b5df#raw

from 1156.316 ms to 2.334 ms

opw-3134913

closes odoo/odoo#113389

X-original-commit: 1549c4dc81f1f5f327b9115944faa87255c31624
Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>

addons/web/controllers/binary.py

@@ -90,10 +90,11 @@ class Binary(http.Controller):
     # pylint: disable=redefined-builtin,invalid-name
     def content_assets(self, id=None, filename=None, unique=False, extra=None, nocache=False):
         if not id:
+            domain = [('url', '!=', False)]
             if extra:
-                domain = [('url', '=like', f'/web/assets/%/{extra}/{filename}')]
+                domain += [('url', '=like', f'/web/assets/%/{extra}/{filename}')]
             else:
-                domain = [
+                domain += [
                     ('url', '=like', f'/web/assets/%/{filename}'),
                     ('url', 'not like', f'/web/assets/%/%/{filename}')
                 ]